Disease Control Method and Disease Control Device

• US 20100281771A1
• Filed: 03/08/2007
• Published: 11/11/2010
• Est. Priority Date: 03/08/2006
• Status: Abandoned Application

• Current Assignee: Shikoku Electric Power Company Incorporated, Shikoku Research Institute, Inc. (Shikoku Electric Power Company Incorporated)
• Original Assignee: Shikoku Electric Power Company Incorporated, Shikoku Research Institute, Inc. (Shikoku Electric Power Company Incorporated)
• Inventors: Yamamoto, Keiji, Kudo, Rika, Suekane, Ayako, Ishida, Yutaka, Kakibuchi, Kazumasa
• Application Number:
  US12/224,912
• Publication Number:
  US 20100281771A1
• Time in Patent Office: Days
• US Class Current: 47/58.1LS
• CPC Class Codes: A01G 7/045 with electric lighting
• CPC Class Codes: Y02P 60/14 Measures for saving energy, e.g. in green houses

Abstract

A disease control device has light emitting diodes (D1 to Dn) emitting green light and a controller (2) controlling a drive circuit (1) for turning on the light emitting diodes (D1 to Dn). The drive circuit (1) is controlled by the controller (2) to cause the light emitting diodes (D1 to Dn) to emit green light to irradiate plants with the light. The irradiation with the green light enhances resistance of the plants against diseases.

Claims

1. A plant disease control method, comprising irradiating a plant with a light beam having a green wavelength region so as to enhance disease resistance of the plant.

2. The plant disease control method according to claim 1, wherein:

the light beam includes a light beam having a green wavelength range and a light beam having a wavelength range of a different color from green; and

the green light is stronger than the different color light.

3. The plant disease control method according to claim 1, wherein a photon level and a period of time for irradiation with the light beam are determined by a type of plant and a type of disease.

4. The plant disease control method according to claim 1, characterized in that the light beam is emitted intermittently.

5. The plant disease control method according to claim 1, wherein pulsed irradiation is carried out while the light beam is emitted.

6. The plant disease control method according to claim 4, wherein a photon level of the light beam, a period of time for irradiation with the light beam, and an intermittence interval of the light beam are determined by a type of plant and a type of disease.

7. The plant disease control method according to claim 5, wherein a photon level of the light beam, a period of time for irradiation with the light beam, and a pulse interval of the light beam are determined by a type of plant and a type of disease.

8. A plant disease control device, comprising:

a light emitting unit to emit green light and irradiate a plant with the emitted green light; and

a control unit to control light emission of the light emitting unit.

9. The plant disease control device according to claim 8, wherein:

a light beam from the light emitting unit includes green light having a green light wavelength range and different color light having a wavelength range of a different color from green; and

the green light is stronger than the different color light.

10. The plant disease control device according to claim 8, wherein:

the light emitting unit is provided movably;

a moving unit to move the light emitting unit is provided; and

the control unit controls the moving unit and the light emitting unit.

11. The plant disease control device according to claim 8, wherein the control unit controls a photon level of a light beam from the light emitting unit and a period of time for irradiation with the light beam according to a type of plant and a type of disease.

12. The plant disease control device according to claim 8, wherein the control unit causes the light emitting unit to emit light intermittently.

13. The plant disease control device according to claim 8, wherein the control unit causes the light emitting unit to emit pulsed light while the light emitting unit is on.

14. The plant disease control method according to claim 12, wherein the control unit controls a photon level of a light beam from the light emitting unit, a period of time for irradiation with the light beam, and an intermittence interval of the light beam according to a type of plant and a type of disease.

15. The plant disease control method according to claim 13, wherein the control unit controls a photon level of a light beam from the light emitting unit, a period of time for irradiation with the light beam, and a pulse interval of the light beam according to a type of plant and a type of disease.